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Thermal barrier coating (colored white) on a turbine guide vane in a V2500 turbofan engine. Thermal barrier coatings (TBCs) are advanced materials systems usually applied to metallic surfaces on parts operating at elevated temperatures, such as gas turbine combustors and turbines, and in automotive exhaust heat management.
Scanning electron micrograph of Mycobacterium tuberculosis. Tuberculosis is a serious public health problem in China. [1] China has the world's third largest cases of tuberculosis (after India and Indonesia), but progress in tuberculosis control was slow during the 1990s.
In 2008, evidence for tuberculosis infection was discovered in human remains from the Neolithic era dating from 9,000 years ago, in Atlit Yam, a settlement in the eastern Mediterranean. [7] This finding was confirmed by morphological and molecular methods; to date it is the oldest evidence of tuberculosis infection in humans.
The poet John Keats, here depicted by William Hilton c. 1822, died of tuberculosis aged 25.. Tuberculosis, known variously as consumption, phthisis, and the great white plague, was long thought to be associated with poetic and artistic qualities in its sufferers, and was also known as "the romantic disease". [2]